SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
	Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person* Burow Kristina (Last) (First) (Middle) 301 BINNEY STREET (Street) CAMBRIDGE MA 02142 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Scholar Rock Holding Corp [ SRRK ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 04/23/2026
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	04/23/2026		M		7,800	A	$26.78	28,871(1)	D
Common Stock	04/23/2026		M		28,000	A	$4.75	56,871(2)	D
Common Stock	04/23/2026		M		36,000	A	$9.11	92,871(3)	D
Common Stock	04/23/2026		M		18,000	A	$8.36	110,871(4)	D
Common Stock								2,345,711	I	See footnote(5)(6)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	$26.78	04/23/2026		M			7,800	(7)	05/27/2031	Common Stock	7,800	$0	0	D
Stock Option (Right to Buy)	$4.75	04/23/2026		M			28,000	(8)	05/26/2032	Common Stock	28,000	$0	0	D
Stock Option (Right to Buy)	$9.11	04/23/2026		M			36,000	(9)	06/21/2033	Common Stock	36,000	$0	0	D
Stock Option (Right to Buy)	$8.36	04/23/2026		M			18,000	(10)	06/27/2034	Common Stock	18,000	$0	0	D

Explanation of Responses:

1. Consists of 21,239 shares of common stock and 7,632 RSUs.

2. Consists of 49,239 shares of common stock and 7,632 RSUs..

3. Consists of 85,239 shares of common stock and 7,632 RSUs.

4. Consists of 103,239 shares of common stock and 7,632 RSUs.

5. The shares are held by ARCH Venture Fund VIII, L.P. ("ARCH VIII"). ARCH Venture Partners VIII, L.P. ("GPLP"), as the sole general partner of ARCH VIII, may be deemed to beneficially own the shares held by ARCH VIII. ARCH Venture Partners VIII, LLC ("GPLLC"), as the sole general partner of GPLP, may be deemed to beneficially own the shares held by GPLP. The GPLP and GPLLC disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein.

6. The managing directors of the GPLLC are Keith L. Crandell, Clinton Bybee and Robert Nelsen, and they may be deemed to beneficially own the shares held by ARCH VIII. Messrs. Crandell, Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein. The Reporting Person is a managing director of the GPLP. The Reporting Person owns an interest in the GPLP but does not have voting or investment control over the shares held by ARCH VIII. The Reporting Person disclaims ownership of such shares, except to the extent of her pecuniary interest therein.

7. This stock option vested on May 26, 2022. No shares remain unvested under this stock option.

8. This stock option vested on May 26, 2023. No shares remain unvested under this stock option.

9. This stock option vested on June 21, 2024. No shares remain unvested under this stock option.

10. This stock option vested on May 22, 2025. No shares remain unvested under this stock option.

	/s/ Junlin Ho, Attorney-in-Fact for Kristina Burow	04/24/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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